Attoeneys



43.;WANSBR0'UGH.

Glevis.

No. 226,137 Pat'entedMar. 30, 188 0.

(P1175 ATTORNEYS N-PEI'ERS, PHOTO-UTHOGRAPHER, WASHINGTON. D c.

llwrrnn STATES EDMUND WANSBROUGH, OE PITTSBUEG, PENNSYLVANIA, ASSIGNOR TO 4 ALEXANDER SPEER & SONS, OF SAME PLACE.

CLEVIS.

SPECIFICATION forming part of Letters Patent No. 226,137, dated March 30, 1880.

Application filed February 10, 1880.

To all whom it may concern Be it known that I, EDMUND WANSBROUGH, of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Olevises and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompan ying drawings, and to letters of reference marked thereon, which form a part of this specification.

My invention relates to an improvement in clevises, the object being to provide a clevis of such construction that it may be adjusted longitudinally, and either draw the rear ends of the plow-beams toward each other or force them apart, as may be desired; and to this end my invention consists, first, in a clevis constructed with recesses on opposite sides of a central partition, the latter being provided with an elongated slot and bearings for the inner sides of the plow-beams, whereby the clevis, when drawn outward or away from the outer ends of the plow-beams, and the latter secured thereto by a bolt passing through the plow-beams and elongated slot in the partition of the clevis, serves to force the rear ends of the plow-beams apart, the desired adjustment of the latter being efi'ected by the required longitudinal adjustment of the clevis.

My invention further consists in certain details of construction, as will hereinafter be described, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a view, in perspective, of my improved clevis with the plow-beams attached thereto. Fig. 2

is aview, in perspectiv,of the clevis detached from the plow-beams. Fig. 3 is a rear elevation. Fig. 4. is a plan view of the plow-beam and horizontal section of the clevis, showing the relative position of parts when the rear ends of the beams are drawn toward each other. Fig. 5 is a similar view, showing the rear ends of the beams forced apart and properly secured in such position.

A represents the clevis, which may be provided with the single perforated attachingplate a, or any desired form of plate or jaws for the attachment of the single or double trees. The rear portion of the clevis is formed with the recesses B B, which are separated by a central partition-plate, O, in which is formed an elongated slot, D. Recesses B B are formed by the upper and lower plates, E E, which project laterally from the upper and lower edges of the central partition-plate, G, a distance equal to the thickness of the plowbeams and the front walls, F F, against which abut the forward ends of the beams. On the rear edge of the central partition -plate is formed a plate, G, which projects laterally from the opposite sides of the central partition, thereby forming bearings g g, upon which rest the inner sides of the plow-beams.

H H. represent the two plow-beams, the forward ends of which are perforated, as at h h. The forward ends of the beams are inserted in the recesses B B, and secured therein by means of the bolt 1, extending through the holes h h in the plow-beams and the elongated slot in the middle partition-plate, C.

It will be observed that the clevis is most firmly secured to the forward ends of the plowbea-ms, as it has an extended bearing on the upper and lower edges thereof, while the inner sides of the plow-beams have two points of support-via, at their forward ends upon the central partition and at points in rear of the attaching-bolt upon the bearings g g.

When the beams are secured to the clevis, as illustrated in Fig. 4, with the forward ends of the beams forced forward to the forward ends of the recesses B B, the rear ends of the beams will be drawn toward each other, as shown in the drawings.

To separate the rear ends of the beams and secure them at any desired distance apart, it is simply necessary to loosen the nut on the fastening-bolt I and pull the clevis forward a slight distance, as illustrated in Fig. 5, and then tighten the nut on the fastening-bolt, thereby firmly securing the beams at the desired angle of adjustment. The clevis serves as a wedge, furnishing fixed bearings g g for the inner sides of the beams and bearing-surfaces on the opposite sides of the central partition-plate for the forward ends of the beams, and hence it may be secured at any desired point, so as to regulate the lateral adjustment of the beams.

While I prefer the form of construction shown and described, it is evident that elongated slots may be made in the ends of the plow-beams, and a bolt-hole in the partitionplate, and thus admit of the longitudinal and lateral adjustment of the plow-beams, and hence I would have it understood that I do not restrict myself to the exact construction and arrangement of parts shown and described; but,

Having fully described my invention, What I claim as new, and desire to secure by Letters Patent, is

1. The combination, with independent beams of a plow or cultivator, of a clevis, A, constructed substantially as described, connected with their forward ends, and adapted to vary the lateral adjustment of the rear ends of said beams by its relative longitudinal adjustment on the forward ends of said beams, substantially as set forth.

2. A clevis provided with recesses on opposite sides thereof for the insertion of the forward ends of the beams, and a central partition having an elongated slot to allow of the lateral adjustment of the rear ends of the EDMUND WANSBROUGH.

Vitnesses:

D. L. GILLEsPIE, Tnos. D. GRAHAM. 

